While I have seen this pattern occur in many software projects I have worked on, I find your implied solution cannot possibly work; bringing everyone to the lowest common denominator can not possibly yield extraordinary results.
The example you put forth, namely rust vs golang is great; rust is an extraordinary tool.. in the right hands. So no, it is not for the average programmer. You need years of experience to see why rust is a great language and framework. To understand the why. Instead of ditching the Jedi and the light saber with it would be a better approach to understand how to leverage the extraordinary individual without alienating the entire base team. Define boxes where they can contribute as individuals who own key components.. alone. Team work is not for everyone ;-)